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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
One kg of steam sample contains 0.8 kg dry steam? Its dryness fraction is

0.8
1
0.2
0.6

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Steam Boilers, Engines, Nozzles and Turbines
Which of the following compound steam engine requires a smaller flywheel?

All of these
Receiver type
Woolf type
Tandem type

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Steam Boilers, Engines, Nozzles and Turbines
Locomotive boiler is of the following type

Multi tubular
Horizontal
Internally fired
All of the listed here

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Steam Boilers, Engines, Nozzles and Turbines
The draught in locomotive boilers is produced by a

Centrifugal fan
Chimney
None of these
Steam jet

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Steam Boilers, Engines, Nozzles and Turbines
In a Parson's turbine stage, blade velocity is 320 m/s at the mean radius and rotor blade exit angle is 30°. For minimum kinetic energy of the steam leaving the stage, the steam velocity at the exit of the rotor will be

640/3 m/s
320/3 m/s
160/3 m/s
640 m/s

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Steam Boilers, Engines, Nozzles and Turbines
The cylinder condensation or missing quantity may be reduced by

The efficient steam jacketing of the cylinder walls
Superheating the steam supplied to the engine cylinder
All of these
Keeping the expansion ratio small in each cylinder

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